In this topic about the fundamental network, start with physical layer until application layer,
So i think network engineer should be has concept about network OSI layer because
it’s standard that help to everyone that can work with many production about network or security
- Application layer: This layer like a browser, program and application
- Presentation Layer: JPEG, PNG
- Session Layer: Control traffic from source to destination that smoothly like cookies session
- Transport Layer: Work with TCP/UDP about service port (FTP, SMTP)
- Network Layer: About IP Network identity about host device
- Data Link Layer: Relate Mac Address for hardware devices, for define source and destination hardware
- Physical Layer: This’s logical system like binary ( 0 1 0 1 0 1 0), Transmits with binary via phisical
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